Improvement in attaching- knobs to their spindles



...a-tia.

W. T. MUNGER, OF

BRANFCRD, ASSIGNR TO P. AND FCORBllN, OF NEW BRITAIN, CONNECTICUT.

f Letters Patent No. 86,683, dated Februar/ry` 9, 1869 IMPROVEMENT IIIN ATTACHING KNOBS TO THEIR SPINDLES.

ThaSchedle refenedto in these Letters Patent and making prt of the same.

Figure l is a section of the spindle and parts that attach the'knob;. y Y

l Figure 2 is a section transversely of the spindle at the line x x,- and i Figure 3 represents part of theknob and spindle endwise of the connecting-key, the rose being broken open to show the parts.

Similar marks of reference denote the same parts.

In connecting knobs to lockspiudles, it has heretofore been usual to slip the square socket of the knob upon the spindle, and introduce a screw transversely 4into or through the shank of the knob and spindle.

This construction renders it necessary to have several holes in the spindle, to accommodate different thicknesses of doors, and generally Washers or wire rings Y are provided in addition, to prevent end-play or looseness in the spindle and knobs. The screw frequently works loose, falls out,'is lost, or injures the hand of theperson grasping the knob, and is a frequent source of annoyance and diiliculty.

The nature of my said invention consists in a retain- 'ing-nut, screwed upon the angles of the polygonal spindie, that can be adjusted to the thickness of the door, in combination with the knob that has a polygonal socket toslip upon the spindle, and a transverse key,

that connects the nut and shank of the knob.

By the aibresaid construction, the nut becomes the primary means for holding on the knob, and the transverse key, the secondary means, and the squared socket of the knob insures the proper turning of the spindle by the knob, and prevents the nut being turned by ordinary use. There is no projecting pin or screw to work loose, and the rose and shank of the knob can be of a much more convenient shape than heretofore.

In the drawinga is the squared or polygonal lock-spindle, of any desired character.

b is the nut, that'is screwed upon a thread cut inthe angles of the spindle.

c represents the plate, or disk, fastened to the snrface of the door, and in which the smaller portion of the nut b turns freely. The shoulder or larger portion of the nut taking'the face of c, prevents end-motion to I the spindle.

The knob d is formed with a shank, e, of any desired size Vor shape, 'buthavinga socket' to set over the 'polygonal spindle a, and it the same.

The shank and nut are halved on the parts that come together, sc as to lap past each other, as seen by dotted lines in iig.' 1, and at this point grooves are formed in the sides of the spindle and nut, into which the forked key i is introduced, so as to connect the shank and nut'together.

The rose k is formed of a shape to set around the shank'of the knob and cover the key i, the exterior edge* of which key should be made circular, and then the rose, when screwed to place, will prevent said key becoming loose. v

It will'be understood that the rose is to be slippedover the shank ofthe knob, and then the knob slid upon the spindle, so that its projecting lap will pass down at the side ofthe projecting lap of thenut, and then the key is to be entered into place, after which Ithe rose is to be screwed to the door. z

This construction of nut and knob forms a very strong and reliable connection to the spindle, so that the parts are not liable to become loose, detached, or injured in use. 4

What I claim, and desire to secure by Letters Patent, iss lThe transverse key, in combination with the nut ,b and shank c of the knob, to unite the said nut and shank at the part where they lap upon each other, substantially as and for the purposes set forth.

In Witness whereof, I have hereunto set my signature, this 5th day of November, A. D. 1868.

Witnesses: W. T. MUNGER.

GHAs. Pncn, EWD L. PRIOR. 

